<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数据源</title>
    <link rel="stylesheet" href="/views/index.css">
</head>

<body>

    {% block header %}
    <header>
        <div class="logo"></div>
        <ul>
            <li class="nav-item {{ 'nav-item-active' if active===1 else 'nav-item' }}">数据源</li>
            <li class="nav-item">数据源</li>
        </ul>
    </header>

    {% endblock %}

    <div class="left">
        {% block left %}{% endblock %}
    </div>

    <div class="right">
        {% block right %} This is more content {% endblock %}
    </div>
</body>

</html>